| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase.wal; |
| |
| import static org.apache.hadoop.hbase.TableName.META_TABLE_NAME; |
| import java.io.IOException; |
| import java.io.InterruptedIOException; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.CellComparatorImpl; |
| import org.apache.hadoop.hbase.CellUtil; |
| import org.apache.hadoop.hbase.MetaCellComparator; |
| import org.apache.hadoop.hbase.PrivateCellUtil; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.io.hfile.CacheConfig; |
| import org.apache.hadoop.hbase.io.hfile.HFileContext; |
| import org.apache.hadoop.hbase.io.hfile.HFileContextBuilder; |
| import org.apache.hadoop.hbase.regionserver.CellSet; |
| import org.apache.hadoop.hbase.regionserver.StoreFileWriter; |
| import org.apache.hadoop.hbase.regionserver.StoreUtils; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.wal.EntryBuffers.RegionEntryBuffer; |
| import org.apache.hadoop.hbase.wal.WAL.Entry; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A WALSplitter sink that outputs {@link org.apache.hadoop.hbase.io.hfile.HFile}s. |
| * Runs with a bounded number of HFile writers at any one time rather than let the count run up. |
| * @see BoundedRecoveredEditsOutputSink for a sink implementation that writes intermediate |
| * recovered.edits files. |
| */ |
| @InterfaceAudience.Private |
| public class BoundedRecoveredHFilesOutputSink extends OutputSink { |
| private static final Logger LOG = LoggerFactory.getLogger(BoundedRecoveredHFilesOutputSink.class); |
| |
| private final WALSplitter walSplitter; |
| |
| // Since the splitting process may create multiple output files, we need a map |
| // to track the output count of each region. |
| private ConcurrentMap<String, Long> regionEditsWrittenMap = new ConcurrentHashMap<>(); |
| // Need a counter to track the opening writers. |
| private final AtomicInteger openingWritersNum = new AtomicInteger(0); |
| |
| public BoundedRecoveredHFilesOutputSink(WALSplitter walSplitter, |
| WALSplitter.PipelineController controller, EntryBuffers entryBuffers, int numWriters) { |
| super(controller, entryBuffers, numWriters); |
| this.walSplitter = walSplitter; |
| } |
| |
| @Override |
| void append(RegionEntryBuffer buffer) throws IOException { |
| Map<String, CellSet> familyCells = new HashMap<>(); |
| Map<String, Long> familySeqIds = new HashMap<>(); |
| boolean isMetaTable = buffer.tableName.equals(META_TABLE_NAME); |
| // First iterate all Cells to find which column families are present and to stamp Cell with |
| // sequence id. |
| for (WAL.Entry entry : buffer.entryBuffer) { |
| long seqId = entry.getKey().getSequenceId(); |
| List<Cell> cells = entry.getEdit().getCells(); |
| for (Cell cell : cells) { |
| if (CellUtil.matchingFamily(cell, WALEdit.METAFAMILY)) { |
| continue; |
| } |
| PrivateCellUtil.setSequenceId(cell, seqId); |
| String familyName = Bytes.toString(CellUtil.cloneFamily(cell)); |
| // comparator need to be specified for meta |
| familyCells |
| .computeIfAbsent(familyName, |
| key -> new CellSet( |
| isMetaTable ? MetaCellComparator.META_COMPARATOR : CellComparatorImpl.COMPARATOR)) |
| .add(cell); |
| familySeqIds.compute(familyName, (k, v) -> v == null ? seqId : Math.max(v, seqId)); |
| } |
| } |
| |
| // Create a new hfile writer for each column family, write edits then close writer. |
| String regionName = Bytes.toString(buffer.encodedRegionName); |
| for (Map.Entry<String, CellSet> cellsEntry : familyCells.entrySet()) { |
| String familyName = cellsEntry.getKey(); |
| StoreFileWriter writer = createRecoveredHFileWriter(buffer.tableName, regionName, |
| familySeqIds.get(familyName), familyName, isMetaTable); |
| LOG.trace("Created {}", writer.getPath()); |
| openingWritersNum.incrementAndGet(); |
| try { |
| for (Cell cell : cellsEntry.getValue()) { |
| writer.append(cell); |
| } |
| // Append the max seqid to hfile, used when recovery. |
| writer.appendMetadata(familySeqIds.get(familyName), false); |
| regionEditsWrittenMap.compute(Bytes.toString(buffer.encodedRegionName), |
| (k, v) -> v == null ? buffer.entryBuffer.size() : v + buffer.entryBuffer.size()); |
| splits.add(writer.getPath()); |
| openingWritersNum.decrementAndGet(); |
| } finally { |
| writer.close(); |
| LOG.trace("Closed {}, edits={}", writer.getPath(), familyCells.size()); |
| } |
| } |
| } |
| |
| @Override |
| public List<Path> close() throws IOException { |
| boolean isSuccessful = true; |
| try { |
| isSuccessful = finishWriterThreads(); |
| } finally { |
| isSuccessful &= writeRemainingEntryBuffers(); |
| } |
| return isSuccessful ? splits : null; |
| } |
| |
| /** |
| * Write out the remaining RegionEntryBuffers and close the writers. |
| * |
| * @return true when there is no error. |
| */ |
| private boolean writeRemainingEntryBuffers() throws IOException { |
| for (EntryBuffers.RegionEntryBuffer buffer : entryBuffers.buffers.values()) { |
| closeCompletionService.submit(() -> { |
| append(buffer); |
| return null; |
| }); |
| } |
| boolean progressFailed = false; |
| try { |
| for (int i = 0, n = entryBuffers.buffers.size(); i < n; i++) { |
| Future<Void> future = closeCompletionService.take(); |
| future.get(); |
| if (!progressFailed && reporter != null && !reporter.progress()) { |
| progressFailed = true; |
| } |
| } |
| } catch (InterruptedException e) { |
| IOException iie = new InterruptedIOException(); |
| iie.initCause(e); |
| throw iie; |
| } catch (ExecutionException e) { |
| throw new IOException(e.getCause()); |
| } finally { |
| closeThreadPool.shutdownNow(); |
| } |
| return !progressFailed; |
| } |
| |
| @Override |
| public Map<String, Long> getOutputCounts() { |
| return regionEditsWrittenMap; |
| } |
| |
| @Override |
| public int getNumberOfRecoveredRegions() { |
| return regionEditsWrittenMap.size(); |
| } |
| |
| @Override |
| int getNumOpenWriters() { |
| return openingWritersNum.get(); |
| } |
| |
| @Override |
| boolean keepRegionEvent(Entry entry) { |
| return false; |
| } |
| |
| /** |
| * @return Returns a base HFile without compressions or encodings; good enough for recovery |
| * given hfile has metadata on how it was written. |
| */ |
| private StoreFileWriter createRecoveredHFileWriter(TableName tableName, String regionName, |
| long seqId, String familyName, boolean isMetaTable) throws IOException { |
| Path outputDir = WALSplitUtil.tryCreateRecoveredHFilesDir(walSplitter.rootFS, walSplitter.conf, |
| tableName, regionName, familyName); |
| StoreFileWriter.Builder writerBuilder = |
| new StoreFileWriter.Builder(walSplitter.conf, CacheConfig.DISABLED, walSplitter.rootFS) |
| .withOutputDir(outputDir); |
| HFileContext hFileContext = new HFileContextBuilder(). |
| withChecksumType(StoreUtils.getChecksumType(walSplitter.conf)). |
| withBytesPerCheckSum(StoreUtils.getBytesPerChecksum(walSplitter.conf)). |
| withCellComparator(isMetaTable? |
| MetaCellComparator.META_COMPARATOR: CellComparatorImpl.COMPARATOR).build(); |
| return writerBuilder.withFileContext(hFileContext).build(); |
| } |
| } |